Purified recombinant EBV desoxyribonuclease in serological diagnosis of nasopharyngeal carcinoma

被引:0
|
作者
Stolzenberg, MC
Debouze, S
Ng, M
Sham, J
Choy, D
Bouguermouh, A
Chan, KH
Ooka, T
机构
[1] FAC MED ALEXIS CARREL,IVMC,UMR 30,MOLEC VIROL LAB,LYON 08,FRANCE
[2] INST PASTEUR ALGERIE,DEPT VIROL HUMAINE,TIPASA,ALGERIA
[3] UNIV HONG KONG,QUEEN MARY HOSP,DEPT PATHOL,HONG KONG,HONG KONG
[4] UNIV HONG KONG,QUEEN MARY HOSP,DEPT RADIOTHERAPY,HONG KONG,HONG KONG
关键词
D O I
10.1002/(SICI)1097-0215(19960503)66:3<337::AID-IJC12>3.0.CO;2-8
中图分类号
R73 [肿瘤学];
学科分类号
100214 ;
摘要
To evaluate applications of highly purified recombinant EBV DNAase in the diagnosis and prognosis of NPC, we tested sera from patients with NPC, other EBV-associated diseases and EBV-seropositive and -seronegative healthy subjects by immunoblotting and DNAase inhibitory assay. The results were compared with those obtained by the conventional immunofluorescence assays against the EBV-specified early antigens and capsid antigens. The antigenic specificity of the immunoblotting assay for Ige antibody against the viral enzyme, but not that for the IgA antibody, was correlated with DNAase-inhibitory activity of the sera and their titers of IgG antibodies against the viral early antigens. Purified IgA as well as IgG from NPC sera inhibited enzyme activity with similar efficiency. The use of highly purified viral DNase has increased the sensitivity of detection of the corresponding antibodies by immunoblotting, with the IgG antibody being detected in all but one, and IgA antibody in all but 2, of the 174 NPC sera tested. The IgG antibody was also commonly detected in the other groups of control sera, while the IgA antibody was detected in about 10% of African Burkitt's lymphoma and Algerian Hodgkin's lymphoma patients and less than 3% of the other control subjects. These results suggest that IgA antibody against recombinant EBV DNAase may be useful in the diagnosis of NPC, but the level of this antibody did not appear to be related to clinical stages of this cancer. (C) 1996 Wiley-Liss, Inc.
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页码:337 / 341
页数:5
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